round-trip light time

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Definitions from WordNet

Noun round-trip light time has 1 sense

round-trip light time, RTLT - the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point
--₁ is a kind of elapsed time

Definitions from the Web

Term: Round-Trip Light Time

Description:

The term "round-trip light time" refers to the duration it takes for a beam of light to travel from a source to a target and back to the source. It is a concept often used in astronomy and space exploration to measure the distance between celestial bodies.

Sample Sentences:

The round-trip light time between Earth and the Moon is approximately 2.5 seconds.
Scientists use round-trip light time calculations to determine the distance of far-off galaxies.
The round-trip light time between a spacecraft and Mars can vary depending on their relative positions in orbit.

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